Fortunately, this woman missed the pet rock fad

Woman throws guinea pigs at officers, police say.   (Channel3000.com, 7/14/2014)

I think she's already made this perfectly clear.  The store manager told police he would temporarily take care of the guinea pigs and give them to a good home if their owner truly no longer wanted them.

Related article:
9 Dumbest Fads Ever to Make Money.  (BC Business, 1/24/2011)